987 lines
24 KiB
TypeScript

import { Application } from "./Application"
import { Diff } from "./Diff"
import { StatusMessage } from "./StatusMessage"
import { PushManager } from "./PushManager"
import { TouchController } from "./TouchController"
import { NotificationManager } from "./NotificationManager"
import { AudioPlayer } from "./AudioPlayer"
import { Analytics } from "./Analytics"
import { SideBar } from "./SideBar"
import { InfiniteScroller } from "./InfiniteScroller"
import { ServiceWorkerManager } from "./ServiceWorkerManager"
import { displayAiringDate, displayDate, displayTime } from "./DateView"
import { findAll, delay, canUseWebP, swapElements } from "./Utils"
import * as actions from "./Actions"
export class AnimeNotifier {
app: Application
analytics: Analytics
user: HTMLElement
title: string
webpEnabled: boolean
contentLoadedActions: Promise<any>
statusMessage: StatusMessage
visibilityObserver: IntersectionObserver
pushManager: PushManager
serviceWorkerManager: ServiceWorkerManager
notificationManager: NotificationManager
touchController: TouchController
audioPlayer: AudioPlayer
sideBar: SideBar
infiniteScroller: InfiniteScroller
mainPageLoaded: boolean
isLoading: boolean
diffCompletedForCurrentPath: boolean
lastReloadContentPath: string
currentSoundTrackId: string
constructor(app: Application) {
this.app = app
this.user = null
this.title = "Anime Notifier"
this.isLoading = true
// These classes will never be removed on DOM diffs
Diff.persistentClasses.add("mounted")
Diff.persistentClasses.add("element-found")
Diff.persistentClasses.add("active")
// Never remove src property on diffs
Diff.persistentAttributes.add("src")
// Is intersection observer supported?
if("IntersectionObserver" in window) {
// Enable lazy load
this.visibilityObserver = new IntersectionObserver(
entries => {
for(let entry of entries) {
if(entry.isIntersecting) {
entry.target["became visible"]()
this.visibilityObserver.unobserve(entry.target)
}
}
},
{}
)
} else {
// Disable lazy load feature
this.visibilityObserver = {
disconnect: () => {},
observe: (elem: HTMLElement) => {
elem["became visible"]()
},
unobserve: (elem: HTMLElement) => {}
} as IntersectionObserver
}
}
init() {
// App init
this.app.init()
// Event listeners
document.addEventListener("readystatechange", this.onReadyStateChange.bind(this))
document.addEventListener("DOMContentLoaded", this.onContentLoaded.bind(this))
document.addEventListener("keydown", this.onKeyDown.bind(this), false)
window.addEventListener("popstate", this.onPopState.bind(this))
// Idle
this.requestIdleCallback(this.onIdle.bind(this))
}
requestIdleCallback(func: Function) {
if("requestIdleCallback" in window) {
window["requestIdleCallback"](func)
} else {
func()
}
}
onReadyStateChange() {
if(document.readyState !== "interactive") {
return
}
this.run()
}
run() {
// Check for WebP support
this.webpEnabled = canUseWebP()
// Initiate the elements we need
this.user = this.app.find("user")
this.app.content = this.app.find("content")
this.app.loading = this.app.find("loading")
// Theme
if(this.user && this.user.dataset.pro === "true" && this.user.dataset.theme !== "light") {
actions.darkTheme(this)
}
// Status message
this.statusMessage = new StatusMessage(
this.app.find("status-message"),
this.app.find("status-message-text")
)
// Push manager
this.pushManager = new PushManager()
// Notification manager
this.notificationManager = new NotificationManager()
// Audio player
this.audioPlayer = new AudioPlayer(this)
// Analytics
this.analytics = new Analytics()
// Sidebar control
this.sideBar = new SideBar(this.app.find("sidebar"))
// Infinite scrolling
this.infiniteScroller = new InfiniteScroller(this.app.content.parentElement, 150)
// Loading
this.loading(false)
}
onContentLoaded() {
// Stop watching all the objects from the previous page.
this.visibilityObserver.disconnect()
this.contentLoadedActions = Promise.all([
Promise.resolve().then(() => this.mountMountables()),
Promise.resolve().then(() => this.lazyLoad()),
Promise.resolve().then(() => this.displayLocalDates()),
Promise.resolve().then(() => this.setSelectBoxValue()),
Promise.resolve().then(() => this.markPlayingSoundTrack()),
Promise.resolve().then(() => this.assignActions()),
Promise.resolve().then(() => this.updatePushUI()),
Promise.resolve().then(() => this.dragAndDrop()),
Promise.resolve().then(() => this.colorStripes()),
Promise.resolve().then(() => this.countUp())
])
// Apply page title
let headers = document.getElementsByTagName("h1")
if(this.app.currentPath === "/" || headers.length === 0 || headers[0].innerText === "NOTIFY.MOE") {
if(document.title !== this.title) {
document.title = this.title
}
} else {
document.title = headers[0].innerText
}
}
async onIdle() {
// Service worker
this.serviceWorkerManager = new ServiceWorkerManager(this, "/service-worker")
this.serviceWorkerManager.register()
// Analytics
if(this.user) {
this.analytics.push()
}
// Offline message
if(navigator.onLine === false) {
this.statusMessage.showError("You are viewing an offline version of the site now.")
}
// Notification manager
if(this.user) {
this.notificationManager.update()
}
// Bind unload event
window.addEventListener("beforeunload", this.onBeforeUnload.bind(this))
// Download popular anime titles for the search
// let response = await fetch("/api/popular/anime/titles/500")
// let titles = await response.json()
// let titleList = document.createElement("datalist")
// titleList.id = "popular-anime-titles-list"
// for(let title of titles) {
// let option = document.createElement("option")
// option.value = title
// titleList.appendChild(option)
// }
// document.body.appendChild(titleList)
// let search = this.app.find("search") as HTMLInputElement
// search.setAttribute("list", titleList.id)
}
async onBeforeUnload(e: BeforeUnloadEvent) {
let message = undefined
// Prevent closing tab on new thread page
if(this.app.currentPath === "/new/thread" && document.activeElement.tagName === "TEXTAREA" && (document.activeElement as HTMLTextAreaElement).value.length > 20) {
message = "You have unsaved changes on the current page. Are you sure you want to leave?"
}
if(message) {
e.returnValue = message
return message
}
}
dragAndDrop() {
for(let element of findAll("inventory-slot")) {
// Skip elements that have their event listeners attached already
if(element["listeners-attached"]) {
continue
}
element.addEventListener("dragstart", e => {
if(!element.draggable) {
return
}
e.dataTransfer.setData("text", element.dataset.index)
}, false)
element.addEventListener("dblclick", e => {
if(!element.draggable) {
return
}
let itemName = element.title
if(element.dataset.consumable !== "true") {
return this.statusMessage.showError(itemName + " is not a consumable item.")
}
let apiEndpoint = this.findAPIEndpoint(element)
this.post(apiEndpoint + "/use/" + element.dataset.index, "")
.then(() => this.reloadContent())
.then(() => this.statusMessage.showInfo(`You used ${itemName}.`))
.catch(err => this.statusMessage.showError(err))
}, false)
element.addEventListener("dragenter", e => {
element.classList.add("drag-enter")
}, false)
element.addEventListener("dragleave", e => {
element.classList.remove("drag-enter")
}, false)
element.addEventListener("dragover", e => {
e.preventDefault()
}, false)
element.addEventListener("drop", e => {
let toElement = e.toElement as HTMLElement
toElement.classList.remove("drag-enter")
e.stopPropagation()
e.preventDefault()
let inventory = e.toElement.parentElement
let fromIndex = e.dataTransfer.getData("text")
if(!fromIndex) {
return
}
let fromElement = inventory.childNodes[fromIndex] as HTMLElement
let toIndex = toElement.dataset.index
if(fromElement === toElement || fromIndex === toIndex) {
return
}
// Swap in database
let apiEndpoint = this.findAPIEndpoint(inventory)
this.post(apiEndpoint + "/swap/" + fromIndex + "/" + toIndex, "")
.catch(err => this.statusMessage.showError(err))
// Swap in UI
swapElements(fromElement, toElement)
fromElement.dataset.index = toIndex
toElement.dataset.index = fromIndex
}, false)
// Prevent re-attaching the same listeners
element["listeners-attached"] = true
}
}
async updatePushUI() {
if(!this.app.currentPath.includes("/settings/notifications")) {
return
}
let enableButton = this.app.find("enable-notifications") as HTMLButtonElement
let disableButton = this.app.find("disable-notifications") as HTMLButtonElement
let testButton = this.app.find("test-notification") as HTMLButtonElement
if(!this.pushManager.pushSupported) {
enableButton.classList.add("hidden")
disableButton.classList.add("hidden")
testButton.innerHTML = "Your browser doesn't support push notifications!"
return
}
let subscription = await this.pushManager.subscription()
if(subscription) {
enableButton.classList.add("hidden")
disableButton.classList.remove("hidden")
} else {
enableButton.classList.remove("hidden")
disableButton.classList.add("hidden")
}
}
colorStripes() {
if(!this.app.currentPath.includes("/explore/color/")) {
return
}
for(let element of findAll("color-stripe")) {
Diff.mutations.queue(() => {
element.style.backgroundColor = element.dataset.color
})
}
}
countUp() {
if(!this.app.currentPath.includes("/paypal/success")) {
return
}
for(let element of findAll("count-up")) {
let final = parseInt(element.innerText)
let duration = 2000.0
let start = Date.now()
element.innerText = "0"
let callback = () => {
let progress = (Date.now() - start) / duration
if(progress > 1) {
progress = 1
}
element.innerText = String(Math.round(progress * final))
if(progress < 1) {
window.requestAnimationFrame(callback)
}
}
window.requestAnimationFrame(callback)
}
}
markPlayingSoundTrack() {
for(let element of findAll("soundtrack-play-area")) {
if(element.dataset.soundtrackId === this.currentSoundTrackId) {
element.classList.add("playing")
}
}
}
setSelectBoxValue() {
for(let element of document.getElementsByTagName("select")) {
element.value = element.getAttribute("value")
}
}
displayLocalDates() {
const now = new Date()
for(let element of findAll("utc-airing-date")) {
displayAiringDate(element, now)
}
for(let element of findAll("utc-date")) {
displayDate(element, now)
}
for(let element of findAll("utc-date-absolute")) {
displayTime(element, now)
}
}
reloadContent(cached?: boolean) {
let headers = new Headers()
if(!cached) {
headers.append("X-Reload", "true")
} else {
headers.append("X-CacheOnly", "true")
}
let path = this.app.currentPath
this.lastReloadContentPath = path
return fetch("/_" + path, {
credentials: "same-origin",
headers
})
.then(response => {
if(this.app.currentPath !== path) {
return Promise.reject("old request")
}
return Promise.resolve(response)
})
.then(response => response.text())
.then(html => Diff.innerHTML(this.app.content, html))
.then(() => this.app.emit("DOMContentLoaded"))
}
reloadPage() {
console.log("reload page", this.app.currentPath)
let path = this.app.currentPath
this.lastReloadContentPath = path
return fetch(path, {
credentials: "same-origin"
})
.then(response => {
if(this.app.currentPath !== path) {
return Promise.reject("old request")
}
return Promise.resolve(response)
})
.then(response => response.text())
.then(html => Diff.root(document.documentElement, html))
.then(() => this.app.emit("DOMContentLoaded"))
.then(() => this.loading(false)) // Because our loading element gets reset due to full page diff
}
loading(newState: boolean) {
this.isLoading = newState
if(this.isLoading) {
document.documentElement.style.cursor = "progress"
this.app.loading.classList.remove(this.app.fadeOutClass)
} else {
document.documentElement.style.cursor = "auto"
this.app.loading.classList.add(this.app.fadeOutClass)
}
}
assignActions() {
for(let element of findAll("action")) {
let actionTrigger = element.dataset.trigger
let actionName = element.dataset.action
// Filter out invalid definitions
if(!actionTrigger || !actionName) {
continue
}
let oldAction = element["action assigned"]
if(oldAction) {
if(oldAction.trigger === actionTrigger && oldAction.action === actionName) {
continue
}
element.removeEventListener(oldAction.trigger, oldAction.handler)
}
// This prevents default actions on links
if(actionTrigger === "click" && element.tagName === "A") {
element.onclick = null
}
// Warn us about undefined actions
if(!(actionName in actions)) {
this.statusMessage.showError(`Action '${actionName}' has not been defined`)
continue
}
// Register the actual action handler
let actionHandler = e => {
actions[actionName](this, element, e)
e.stopPropagation()
e.preventDefault()
}
element.addEventListener(actionTrigger, actionHandler)
// Use "action assigned" flag instead of removing the class.
// This will make sure that DOM diffs which restore the class name
// will not assign the action multiple times to the same element.
element["action assigned"] = {
trigger: actionTrigger,
action: actionName,
handler: actionHandler
}
}
}
lazyLoad() {
for(let element of findAll("lazy")) {
switch(element.tagName) {
case "IMG":
this.lazyLoadImage(element as HTMLImageElement)
break
case "IFRAME":
this.lazyLoadIFrame(element as HTMLIFrameElement)
break
}
}
}
emptyPixel() {
return "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII="
}
lazyLoadImage(element: HTMLImageElement) {
// Once the image becomes visible, load it
element["became visible"] = () => {
let dataSrc = element.dataset.src
let dotPos = dataSrc.lastIndexOf(".")
let base = dataSrc.substring(0, dotPos)
let extension = ""
// Replace URL with WebP if supported
if(this.webpEnabled && element.dataset.webp === "true") {
let queryPos = dataSrc.lastIndexOf("?")
if(queryPos !== -1) {
extension = ".webp" + dataSrc.substring(queryPos)
} else {
extension = ".webp"
}
} else {
extension = dataSrc.substring(dotPos)
}
// Anime images on Retina displays
if(base.includes("/anime/") && window.devicePixelRatio > 1) {
base += "@2"
}
let finalSrc = base + extension
if(element.src !== finalSrc && element.src !== "https:" + finalSrc && element.src !== "https://notify.moe" + finalSrc) {
// Show average color
if(element.dataset.color) {
element.src = this.emptyPixel()
element.style.backgroundColor = element.dataset.color
Diff.mutations.queue(() => element.classList.add("element-color-preview"))
}
Diff.mutations.queue(() => element.classList.remove("element-found"))
element.src = finalSrc
}
if(element.naturalWidth === 0) {
element.onload = () => {
if(element.src.startsWith("data:")) {
return
}
Diff.mutations.queue(() => element.classList.add("element-found"))
}
element.onerror = () => {
if(element.classList.contains("element-found")) {
return
}
Diff.mutations.queue(() => element.classList.add("element-not-found"))
}
} else {
Diff.mutations.queue(() => element.classList.add("element-found"))
}
}
this.visibilityObserver.observe(element)
}
lazyLoadIFrame(element: HTMLIFrameElement) {
// Once the iframe becomes visible, load it
element["became visible"] = () => {
// If the source is already set correctly, don't set it again to avoid iframe flickering.
if(element.src !== element.dataset.src && element.src !== (window.location.protocol + element.dataset.src)) {
element.src = element.dataset.src
}
Diff.mutations.queue(() => element.classList.add("element-found"))
}
this.visibilityObserver.observe(element)
}
mountMountables() {
this.modifyDelayed("mountable", element => element.classList.add("mounted"))
}
unmountMountables() {
for(let element of findAll("mountable")) {
if(element.classList.contains("never-unmount")) {
continue
}
Diff.mutations.queue(() => element.classList.remove("mounted"))
}
}
modifyDelayed(className: string, func: (element: HTMLElement) => void) {
const maxDelay = 1000
const delay = 18
let time = 0
let start = Date.now()
let maxTime = start + maxDelay
let mountableTypes = new Map<string, number>()
let mountableTypeMutations = new Map<string, Array<any>>()
let collection = document.getElementsByClassName(className)
if(collection.length === 0) {
return
}
// let delay = Math.min(maxDelay / collection.length, 20)
for(let i = 0; i < collection.length; i++) {
let element = collection.item(i) as HTMLElement
// Skip already mounted elements.
// This helps a lot when dealing with infinite scrolling
// where the first elements are already mounted.
if(element.classList.contains("mounted")) {
continue
}
let type = element.dataset.mountableType || "general"
if(mountableTypes.has(type)) {
time = mountableTypes.get(type) + delay
mountableTypes.set(type, time)
} else {
time = start
mountableTypes.set(type, time)
mountableTypeMutations.set(type, [])
}
if(time > maxTime) {
time = maxTime
}
mountableTypeMutations.get(type).push({
element,
time
})
}
for(let mountableType of mountableTypeMutations.keys()) {
let mutations = mountableTypeMutations.get(mountableType)
let mutationIndex = 0
let updateBatch = () => {
let now = Date.now()
for(; mutationIndex < mutations.length; mutationIndex++) {
let mutation = mutations[mutationIndex]
if(mutation.time > now) {
break
}
func(mutation.element)
}
if(mutationIndex < mutations.length) {
window.requestAnimationFrame(updateBatch)
}
}
window.requestAnimationFrame(updateBatch)
}
}
async diff(url: string) {
if(url === this.app.currentPath) {
return null
}
let path = "/_" + url
try {
// Start the request
let request = fetch(path, {
credentials: "same-origin"
})
.then(response => response.text())
history.pushState(url, null, url)
this.app.currentPath = url
this.diffCompletedForCurrentPath = false
this.app.markActiveLinks()
this.unmountMountables()
this.loading(true)
// Delay by transition-speed
await delay(150)
let html = await request
// If the response for the correct path has not arrived yet, show this response
if(!this.diffCompletedForCurrentPath) {
// If this response was the most recently requested one, mark the requests as completed
if(this.app.currentPath === url) {
this.diffCompletedForCurrentPath = true
}
// Update contents
await Diff.innerHTML(this.app.content, html)
this.app.emit("DOMContentLoaded")
}
} catch(err) {
console.error(err)
} finally {
this.loading(false)
}
}
innerHTML(element: HTMLElement, html: string) {
return Diff.innerHTML(element, html)
}
post(url: string, body: any) {
if(this.isLoading) {
return Promise.resolve(null)
}
if(typeof body !== "string") {
body = JSON.stringify(body)
}
this.loading(true)
return fetch(url, {
method: "POST",
body,
credentials: "same-origin"
})
.then(response => {
this.loading(false)
if(response.status === 200) {
return Promise.resolve(response)
}
return response.text().then(err => {
throw err
})
})
.catch(err => {
this.loading(false)
throw err
})
}
scrollTo(target: HTMLElement) {
const duration = 250.0
const steps = 60
const interval = duration / steps
const fullSin = Math.PI / 2
const contentPadding = 24
let scrollHandle: number
let newScroll = 0
let finalScroll = Math.max(target.offsetTop - contentPadding, 0)
// Calculating scrollTop will force a layout - careful!
let oldScroll = this.app.content.parentElement.scrollTop
let scrollDistance = finalScroll - oldScroll
if(scrollDistance > 0 && scrollDistance < 4) {
return
}
let timeStart = Date.now()
let timeEnd = timeStart + duration
let scroll = () => {
let time = Date.now()
let progress = (time - timeStart) / duration
if(progress > 1.0) {
progress = 1.0
}
newScroll = oldScroll + scrollDistance * Math.sin(progress * fullSin)
this.app.content.parentElement.scrollTop = newScroll
if(time < timeEnd && newScroll != finalScroll) {
window.requestAnimationFrame(scroll)
}
}
window.requestAnimationFrame(scroll)
}
findAPIEndpoint(element: HTMLElement) {
if(element.dataset.api !== undefined) {
return element.dataset.api
}
let apiObject: HTMLElement
let parent = element
while(parent = parent.parentElement) {
if(parent.dataset.api !== undefined) {
apiObject = parent
break
}
}
if(!apiObject) {
throw "API object not found"
}
return apiObject.dataset.api
}
onPopState(e: PopStateEvent) {
if(e.state) {
this.app.load(e.state, {
addToHistory: false
})
} else if(this.app.currentPath !== this.app.originalPath) {
this.app.load(this.app.originalPath, {
addToHistory: false
})
}
}
onKeyDown(e: KeyboardEvent) {
let activeElement = document.activeElement
// Ignore hotkeys on input elements
switch(activeElement.tagName) {
case "INPUT":
//
if(activeElement.id === "search" && e.keyCode === 13) {
actions.search(this, activeElement as HTMLInputElement, e)
}
return
case "TEXTAREA":
return
}
// Ignore hotkeys on contentEditable elements
if(activeElement.getAttribute("contenteditable") === "true") {
// Disallow Enter key in contenteditables and make it blur the element instead
if(e.keyCode === 13) {
if("blur" in activeElement) {
activeElement["blur"]()
}
e.preventDefault()
e.stopPropagation()
}
return
}
// "Ctrl" + "," = Settings
if(e.ctrlKey && e.keyCode === 188) {
this.app.load("/settings")
e.preventDefault()
e.stopPropagation()
return
}
// The following keycodes should not be activated while Ctrl is held down
if(e.ctrlKey) {
return
}
// "F" = Search
if(e.keyCode === 70) {
let search = this.app.find("search") as HTMLInputElement
search.focus()
search.select()
e.preventDefault()
e.stopPropagation()
return
}
// "S" = Toggle sidebar
if(e.keyCode === 83) {
this.sideBar.toggle()
e.preventDefault()
e.stopPropagation()
return
}
// "+" = Audio speed up
if(e.keyCode === 107 || e.keyCode === 187) {
this.audioPlayer.addSpeed(0.05)
e.preventDefault()
e.stopPropagation()
return
}
// "-" = Audio speed down
if(e.keyCode === 109 || e.keyCode === 189) {
this.audioPlayer.addSpeed(-0.05)
e.preventDefault()
e.stopPropagation()
return
}
// "J" = Previous track
if(e.keyCode === 74) {
this.audioPlayer.previous()
e.preventDefault()
e.stopPropagation()
return
}
// "K" = Play/pause
if(e.keyCode === 75) {
this.audioPlayer.playPause()
e.preventDefault()
e.stopPropagation()
return
}
// "L" = Next track
if(e.keyCode === 76) {
this.audioPlayer.next()
e.preventDefault()
e.stopPropagation()
return
}
}
}